Pelvis Protecting Chair

ABSTRACT

This invention relates to a pelvis protecting chair composed with elastic seats. This invention is composed of a base ( 10 ) mounted on a stationary part ( 60 ) with a castor ( 66 ) mounted stand ( 65 ), at least one set of seat supports ( 20 ) hinged to the base, a spring ( 30 ) elastically connecting the base ( 10 ) and the seat support ( 20 ), seats ( 50 ) mounted to the seat supports ( 20 ), and armrests ( 75 ) and a backboard ( 70 ) mounted to the base ( 10 ).

TECHNICAL FIELD

The present invention relates to a pelvis protecting chair. Morespecifically, it is about comprising the seat which is in contact withthe user's pelvis with elastic materials so that it should protect thepelvis.

BACKGROUND ART

Generally, human spine is formed with the cervical vertebrae, thethoracic vertebrae, and the lumbar. The coccyx, located at the end ofthe lumbar, can be the origin of pain due to overwork or sedentariness,and this pain is called coccygodinia.

Specifically, coccygodinia is a disease which brings pain when thecoccyx, located behind the anus, moves and the coccyx individually isnot the cause of the disease. The disease occurs twice more to womenthan to men, and it is usually diagnosed to factory workers orsecretaries.

Falling on the backside on a snowy day, or hobbies or work whichconsistently gives impact to the coccyx, for example, horse riding, orobstetric history such as parturition, and dystocia, or diseases likespinal arthritis can be the causes of coccygodinia. It is known thatpatients of coccygodinia feel pain when the muscles connected to theircoccyx goes through contraction or relaxation.

Skeletal muscle relaxants can be used for treating this disease, if thistreatment does not bring any progress, local anesthetize or injectingsteroids can help to bring relaxation to the muscles connected to thecoccyx. The patient should work out the muscles at his lower back, andhe should also fix his wrong posture.

For rare cases, when reliable lesions are discovered through radioactiveinspections, surgeries cutting out the coccyx are performed.

So that unless the cause of pain in the coccyx is so definite which canlead to a absolute cure, the relapse of coccyxodinia can result as aserious nuisance to the patient.

For other diseases, hemorrhoids is a varix in the rectum and the anus,in other words, it is the expanded vain of the anus and lower rectum.

Hemorrhoids can be classified as internal hemorrhoids and externalhemorrhoids develops around the anus and is surrounded with verysensitive tissues, and if thrombus develops, extreme bloat erupts withsevere pain. It can be detected as a hard lump and when it is ruptures,it bleeds.

Internal hemorrhoids shows symptoms as painless bleeding and projectionduring the action of the bowels beneath the pectinate line. But eveninternal hemorrhoid can bring severe pain when a full extrication(extrication at the anus when it does not go back in the anus whenpushed) occurs.

Therefore, even hemorrhoid patients can not sit down in a chair for along time because of the severe pain, and feel pain undergoing normallife.

But, comfortable chairs for patients of coccyxodinia or hemorrhoids whofail pain in their nates area are not developed so that these patientsfeel difficulty during everyday life.

To relief this problem, there is the “Chairs with divided seats”, whichwas registered by the applicant of this invention as Korean UtilityModel Reg. No. 20-0260631.

The conception of Korean Utility Model Reg. No. 20-0260631 is tomanually adjust the space between the two seats, using a set of linkagesmounted under the chair.

But the prior chairs that were invented with this mechanism shows someinconveniences. The user should stand up and unlock the stationary stateand then pull or push the other seat to adjust the space between theseats and then lock the stationary state. Along with this, the spacebetween the sheets can be adjusted to settled spaces which can notprovide minute adjustment.

And for most cases, the chair is used by a single user so that once thespace between the seats, there is no necessary to adjust it again, whichleads to the increase of the manufacturing cost.

And the instillation of the space control linkage leads to growth ofweight, which can lead to inconveniency for handling.

DISCLOSURE Technical Problem

Thus, this invention contrives from the described problems that has apurpose of developing a coccyx protecting chair, which considers theusers physical status and can adjust the space between a set of seats toa certain amount, and allow vertical adjustments of the seats.

Another object of this invention is to simplify the frame of the chairwhich improves the manufacturing.

Technical Solution

To reach theses purposes, this invention has at least one set of basehinges mounted symmetrically on the upper base plate, a base mounted onthe stationary part securing the default height of the chair, at least asingle seat support which is hinged to the aforementioned base, a springwhich is mounted between the aforementioned base and the seat base tosustain the resilient between the two bases, and a pair of seatscorresponding to the two seat bases.

The support hinge of the seat support is mounted on the side of theaforementioned base to behave as a stopper which sustains the seatsupport at a uniform angle.

The aforementioned spring is a leaf spring which has one end of thespring mounted to the topside of the base, and the other end which isupper curved so that it can absorb the compression from extreme stress,mounted to the bottom side of the seat support.

The leaf bottom side of the spring is fixed to the seat support.

The base, or the stationary part has a set of armset connected to thelower part of it, and it also has a backboard attached to it.

The stationary part also includes a height adjustment linkage, and acaster for making the vertical movement possible.

ADVANTAGEOUS EFFECTS

The invention prevents widening of the pelvis for users who are in asedentary position for long times, and reduces the pressure on thecoccyx so that the pain to the coccyx can be relieved, and providesconvenience to patients of anal diseases.

This invention also increases productivity due to its relatively simpledesign.

DESCRIPTION OF DRAWINGS

FIG. 1 is the structural front view of the Pelvis Protecting Chair.

FIG. 2 is the descriptive front view of the Pelvis Protecting Chair.

FIG. 3 is the structural plane view (A) and the side view (B) of theseat.

FIG. 4 is the structural front view of the seat.

FIG. 5 is the descriptive plane view (A), side view (B), front view (C)of the base of the seat.

FIG. 6 is the structural plane view (A), side view (B), front view (C)of the base of the seat.

FIG. 7 is the structural plane view (A), side view (B), front view (C)of the leaf spring.

FIG. 8 is the disassembly figure of the components which constructs themain part of the Pelvis Protecting Chair.

BEST MODEL

The prescribed invention is precisely described with reference to theappended diagrams.

As shown in FIG. 1 and FIG. 8, the Pelvis Protecting Chair is consistsof a base (10) mounted on a stationary part (65) which has a caster (66)mounted on a stand (65), two seat supports (20) hinged to the base, aleaf spring (30) to provide elasticity between the seat and the base,seats (50) mounted on the seat supports (20), and two armrests (75) anda backboard which are both connected to the base (10).

As described in FIG. 5, there are two symmetrically mounted hinges onthe base (10), and the hinges have the first hinge connecting hole (13a) each.

In the center of the base (10), there is a connecting part (11 a), andthere is a screw hole (11 b) to connect with the stationary part (60) inthe connecting part (11 a)

The connecting part (11 a) is used as the gap for bolt which goesthrough the screw hole (11 b), and the curved end (35) of the leafspring (30) insures the space for lowering the seat.

The base plate (11) is a 2 mm thick steel plate for light weight, andfor rigidity, the edge of the plate is tilted toward the down side. Itis pressed so that the center of the plate is projected in thehorizontal direction (in the direction of the hinges (13)).

The seat support (20) is connected with the base (10) with 4 hinges(13).

As described in FIG. 6, the support hinge (23) connected to the basehinge (13), is formed downward, and there is the seat instillation (21)mounted on the seat (50).

The first stage of the seat instillation (21), which is the stationarystage (34) at the upper end of the leaf spring, and it is connected tothe spring instillation (21 a). And there is a connecting hole (21 b)for connecting the seat (50).

The supporting hinge (23) has the second connecting hole (23 a) whichcorresponds to the first connecting hole (13 a) of the base hinge (13),and there is a stopper (23 b) on the edge side of the base (10).

As described in FIG. 7, the spring (30) consists a curved mid section(33) at the point where the seat support (20) hinge is linked, andcentering around the mid section (33), the upper part (32) which is incontact to seat support (20), and the stationary stage (34) which isconnected to the upper curved spring of the seat support (20) ispositioned. And centering the mid section (33) the lower stage (31)connected to the upper part of the base (10), and the curved section(35) which is tilted upward is symmetrically positioned. This curvedsection (35) absorbs the impact from extreme weight acting downward.

The main components of seat according to this invention are connected asshown in FIG. 3 and FIG. 4. The seat support hinge (23) of the seatsupport (20) is connected to the base hinge (13) of the base (10), andthe hinge bolt (40) is used to connect the hinges.

Before connecting the hinge bolt (40), the spring (30) should becompressed to be set up between the base (10) and the seat support (20),and then the hinge bolt (40) should be tightened.

And the seat (50) should be fixed to the seat support (20) with the seatbolt (55)

As described in FIG. 1, in this invention, the stationary part (60)connected to the stand (65) can be connected to the base (10) and thebase can also be connected to the stationary part (60), and the armrests(75), and the backboard (70), when necessary.

When assembled as above, the space between the seat support (20) and thebase (10) sustains a certain amount of distance due to the tension ofthe leaf spring (30) which results to a parallel state. The repulsion ofthe spring (30) prevents the seat support (20) from being unparallel andmoving up, by making one side of the stopper (23 b) at the hinge (23) tobe in contact with the side of the base (10).

And as shown in FIG. 2, when the user sits on the seat (50), the forcefrom the users weight described as the 2 dotted chain line moves throughthe seat downward, centering the base hinge (13), and the support hinge(23), so that force that pushes from both sides of the pelvis actstoward the center (the arrow in FIG. 2) to protect the users pelvis.

INDUSTRIAL APPLICABILITY

This invention prevents the pelvis of the patient from becoming wider,and relieves the pressure of the coccyx to constraint the pain, andprovides convenience to patients with anal diseases.

1. A pelvis protecting chair comprising: a base having at least one setof base hinges symmetrically located on both sides of the top of a baseplate, and mounted on a stationary part at a predetermined height; atleast one set of seat supports with hinges mounted under side thereofand hinged to the base hinge; a spring installed at a connecting pointof the seat support hinge for elastically sustaining the seat support;and at least one set of seats corresponding to the seat support;
 2. Thepelvis protecting chair according to claim 1, wherein the seat supporthinge of the seat support has a stopper which is in contact with a sideof the base for sustaining the seat support in a certain angle.
 3. Thepelvis protecting chair according to claim 1, wherein the spring is aleaf spring, one side of which is connected to the upper side of thebase, and the other side of which is connected to the lower side of theseat support.
 4. The pelvis protecting chair according to claim 3,wherein the end portion of the base side of the leaf spring is curved inan upward direction.
 5. The pelvis protecting chair according to claim3, wherein the end portion of the seat support side of the leaf springis fixed at the seat support.
 6. The pelvis protecting chair accordingto claim 1, further comprising a set of armrests connected to the bothsides of the lower part of the base or the stationary part.
 7. Thepelvis protecting chair according to claim 1, further comprising abackboard connected to rear side of the lower part of the base or thestationary part.
 8. The pelvis protecting chair according to claim 1,wherein the stationary part has a height controlling section and amovement allowing caster.
 9. The pelvis protecting chair according toclaim 1, further comprising a connecting section at the base forconnecting the stationary part, and which is positioned lower than thebase plate.
 10. The pelvis protecting chair according to claim 1,wherein the base hinges and seat supports are 3 sets, respectively.